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DateFri, 25 May 2007 10:55:21 +0200
FromIngo Molnar <>
SubjectRe: [patch] x86_64: fix sched_clock()

* Andi Kleen <andi@firstfloor.org> wrote:

> > must be an -mm fix. I used -mm as a basis of my work. Please apply
> > my patch.
>
> I would prefer to find out why the mm patch was added and then
> hopefully remove it. IMNSHO it should not be needed.

it comes in via:

fix-x86_64-mm-sched-clock-share.patch

From: Rusty Russell <rusty@rustcorp.com.au>

If you set tsc_disable (eg "notsc" on cmdline), sched-clock.c gives a
divide by zero on boot.

so IMNSHO it is very much needed ;-)

Ingo
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